Put Desi chicken pieces in a pot with 6 cups water and 1/2 tbsp garlic.  Bring to a boil, for 1 and half hour.then simmer for 5 minutes.  Take out the chicken and set aside the stock.

Heat up 1/3 cup of oil.  Add chopped onions and fry till light golden brown.Add ginger and garlic paste and fry until the raw smell goes away and the mixture turns golden brown and the oil separates.Add tomatoes and fry until they are soft.Empty this mixture into a blender, try to leave behind as much oil as you can in the pot.  Blend until the mixture is of uniform consistency.

In empty pot, add 2 tbsp oil and heat the oil.
Add cloves, peppercorns, cardamom, cinnamon stick and cumin seeds.  Wait for the cumin seeds to start crackling.
Add the salt, red chili powder and turmeric powder.  Fry until the raw smell of the turmeric goes away.  Don't let the spices burn while you do this.  Add chicken stock little bit

Add coriander powder, nutmeg and black kalongi and Fry for a bit until the spices are well incorporated into the mixture.
Add the tomatoes mixture from the blender.  Fry until oil separates.

Add the chicken pieces.  Stir fry for about 5-10 minutes.
Add the chicken stock.  Stir to incorporate completely.  Cover and bring to a boil, then let simmer until the chicken is tender On low flame and cook until chicken is done.

Boil down to desired consistency. 
Taste for salt and spices, adjust if necessary.